Wrench.



L. W. MILLSAP, JR.

WRENCH.

APPLICATION man AUG.5, 1913.

1,155,948. v Patented Oct. 5, 1915;

42 mum/r012 154 /1/05? M/V/L 4 55F, 1/5

ATTORIVEKS COLUMBIA PLANOGRAPH c0., WASHINGTON, D. C.

LEANDER WALTER MILLSAP, 33., 0F WOODLAND, CALIFORNIA.

WRENCH.

Specification of Letters Patent.

Patented Get. 5, 1915.

Application filed August 5, 1913. Serial No. 783,017.

To all whom it may concern:

Be it known that I, LEANDER W ,MrLLsAP, J12, a citizen of the United States, and a resident of Woodland, in the county of Yolo and State of California, have made certain new and useful Improvements in Wrenches, of which the following is a specification.

My invention is an improvement in wrenches and has for its object to provide a wrench comprising a movable jaw and a fixed jaw, wherein the coarse adjustment is obtained by means of a screw or worm, and wherein the fine adjustment is obtained by the direct movement of the jaws toward each other, to permit the jaws to grasp an object of any size between the extreme open and extreme closed position of the jaws.

In the drawings: Figure 1 is a front view of the improved wrench, Fig. 2 is a side view, showing the parts in closed position in full lines, and in open position in dotted lines. Fig. 3 is a partial side view of a modified construction, and, Fig. 4 is a similar view of another modification.

The present embodiment of the invention comprises a shank 1 of rectangular cross section, and provided at one end" with a 'ransversely arranged fixed head extending beyond the shank 1 at one side to form the fixed jaw 3 of the wrench.

The opposite end of the shank from the head 2 is bent laterally in thesame direction as the fixed jaw 3 to form a grip or handle 4, and the movable jaw 5 is provided with the usual extension 6, the jaw and the extension having bearings 7 encircling the shank, to provide for the sliding movement of the jaw 5 toward and from the jaw 3.

The extension 6 lies alongside that edge of the shank adjacent to the iixed jaw 3, and the said extension is provided with an internally threaded longitudinally extending opening 8 for receiving one end of the threaded rod 9. The other end of the rod 9 is plain, as indicated at .10, and thesaid end is passed through an opening 11 in a laterally extending lug 12 from the shank, near the commencement of the grip or handle 4:.

The rod is provided with the usual corrugated head or knob 13 for convenience in rotating the rod to move the movable jaw toward and from the fixed jaw, and the adj acent edge of the shank is cut away or re-.

cessed, a shown at 1 1, to permit the move ment of the head or knob 13 toward and from the fixed aw. The rod 9 is arranged n such position with respect to the shank, that a portion of the shank at the edge adjacent to the rod must be cut away to permit the free movement of the head or knob, and the cut away portion extends from the lug 12 toward the fixed head, a shoulder 15 being provided at the upper end of the said recessed or cut away portion. The shoulder 15 and the lug 12 limit the movement 'of thehead 13 toward and from the fixed jaw, and the plain portion of the rod 10 extends below the lug 12, as shown in Figs. 1 and 2. The grip or handle 4 is a fixed handle, and a movable handle 16 is connected with the shank at the junction of the grip 1 therewith. The said handle 16 is channeled on its inner face, to permit the grip 4: to fit within the channel and the sides of the channel extend on opposite sides of the shank at the junction of the grip 4 therewith, and a pivot pin 17 is passed through the sides of the channel and the shank to pivotally connect the handle with the shank.

The handle is provided with oppositely arranged laterally extending lugs 18, the said lugs extending beyond the opposite edge of the shank from the handle 16, and a roller 19 is provided at each end with journal pins 20 which are received in openings in the lugs 18, to journal the said roller between the lugs. The roller is in such position, that its peripheral surface will engage the rounded end of the plain portion 10 of the rod, and it will be evident that when the movable handle 16 is swung with respect to the shank, as indicated in full and dotted lines in Fig. 2, the roller 19 will move the rod 9 toward the fixed jaw, and since the said 'rod'is connected to the movabie jaw, the movable jaw will also be moved toward the fixed jaw.

A spring is provided for normally holding the movable jaw in open position, and the said spring is substantially U-shaped, comprising a body 21 extending transversely of the rod'9 on the opposite side thereof from the shank, and arms 22, the said arms extendingon opposite sides of the shank. Each of the arms is bent laterally downward alongside the shank, as indicated at 23, to a connection with a headed pin 24.- on' the adjacent face of the shank, and the free end of each of the said "portions 23 of the arm bears against a ledge or rib 25 on the adjacent side of the shank. The ribs 25 are continuations of the lug 12, and the portions 22 of the arms bear on the upper face of the head or knob 13. The upper face of the said head or knob is countersunk, as indi cated in Figs. 1 and 2, and the arms are moved downwardly to be received within the countersunk portion.

In operation, the movable jaw is adjusted with respect to the fixed jaw, by means of the threaded rod 9, the distance between the jaws being greater than the diameter or width of the object to be grasped. As indicated in Fig. 2,-the adjustment is such that when the head 13 is in engagement with the lug 12, the engaging face of the movable jaw will be approximately one-fourth of an inch away from the engaging face of the fixed jaw or the object between. The spring 21-2223 normally holds the head 13 in engagement with the lug 12, and also normally holds the movable handle 16 in the dotted line position of Fig. 2. With the parts in this position, the jaws are arranged on opposite sides of the object to be grasped in the usual manner, and the handle is pressed toward thev grip or hand l, it being understood that both handles are engaged by the same hand. The entire strength of the grip of the hand of the user may be utilized to compress the jaws on the object, and as soon as this pressure is relaxed, as for instance to secure a new grip the spring will open the jaws and will force the handle into the. dotted line position of Fig. 2, When the new grip has been attained, the movable handle is again moved toward the fixed handle to grip the object to be turned.

In the construction of Fig. 3, the movable jaw 5 is connected with the screw 9 in the usual manner, and the said screw has a knob or head13 for turning the same. The lower end of the screw is plain, as indicated at 26, and passes through a bearing 27 on the shank 1. The lower end of the opening through the bearing 27 is counterbored or enlarged as indicated at 28, and a coil spring 29 is seated at one end of the counterbored portion, the said spring bearing at its opposite end against the head 30 on the rod 9 The movable handle 16 is pivoted at 17- to the shank, and the said handle is provided with a lug or lugs 31 which engage the head 30. V

In the construction of Fig. 4, the movable handle 16 is pivoted to an extension 32 from the: movable jaw 33. The shank 34 is provided on its rear face with a series of teeth 35, and the bearing 36 of the movable jaw which embraces the shank is extended rearwardly beyond the teeth 35, as indicated at 37. A rod 38 is journaled in th e'exten sion37, and a worm 39 is secured'tothe rod below the, extenSiQn 37, the worm meshing with the teeth 35. The movable handle 16 is pivoted to the extension 32 of the movable jaw as indicated at 17.

The movable handle 16? is a species of elbow lever and is pivotally connected to a lug 40 on a bearing sleeve 44, which is journaled on the rod 38 between an annular rib or stop 45 and a head l6 on the said rod. The movable handle 16 is pivoted to the lug as indicated at 43 at the upper end of the said movablehandle and at the junction of the arms and the movable handle is constituted by one of the arms of the elbow lever. The other arm 16 extends toward the extension 32 of the movable jaw and is pivoted thereto as indicated at 17". It will be understood that the arm 16 may be doubled if desired, the members extending on opposite sidesfof the extension 32. Thus the movable handle is indirectly pivoted to the movable jaw, since the rod 38 is rotatably connected with the jaw, but is-not movable longitudinally thereof, and the movable handle is pivoted to the rod by means of the bearing sleeve a l and the lugs 41.

In the construction of Fig. 4, the coarse adjustment is by means of the worm 39, and the fine adjustment is obtained by the movement of the movable handle l6 toward the shank, henthe free end of the movable bearing 37, to permit the necessary relative movement between the movable jaw and the said rod. 7 r

I claima. V

1. A wrench comprising a shank having at one end a fixed jaw extending beyond one side edge thereof and having the other end offset laterally in the same direction as the fixed jaw to form a fixed grip or handle, a movable jaw slidable on the shank toward d m e x d jaw ternally threaded opening extending longitudinally of the shank and on the opposite side of the movable jaw from the fixed jaw, said shank having a lug at the end adjacent to the grip orhandle, a rodhaving a plain portion journaled in the lug and a threaded portion for engaging the opening of the movable jaw, said rod having a head between the threaded and the plain portion to turn the rod, a spring engaging the head and normally pressingthe said head toward the lug, theshank having means for engagement by the head to limit the movement thereof toward the fixed jaw, and a movable handle pivoted to the shank on the opposite side of the lug from the fixed jaw, s i mo abl h nd e having s. e e ding n Opposi e. f ces of h s an ow rd. h xed i'aw,.,an a ller; i al d. b t een. he lugs a nd engaging the adjacent end of the Pl in Pant es or he rod,

and having an in-- 2. A wrench comprising a shank having at one end a fixed jaw extending beyond one side edge thereof and having the other end offset laterally in the same direction as the fixed jaw to form a fixed grip or handle, a movable jaw slidable on the shank toward and from the fixed jaw and having an internally threaded opening extending longitudinally of the shank and on the opposite side of the movable jaw from the fixed jaw, said shank having a lug at the end adjacent to the grip or handle, a rod having a plain portion j ournaled in the lug and a threaded portion for engaging the opening of the movable jaw, said rod having a head between the threaded and the plain portion to turn the rod, a spring engaging the head and normally pressing the said head toward the lug, the shank having means for engagement by the head to limit the movement thereof toward the fixed jaw, a handle pivoted to the shank for swinging movement toward and from the grip, said handle having means for engaging the end of the rod to move the movable jaw toward the fixed jaw when the movable handle is swung toward the fixed handle.

3. A wrench, comprising a shank having a laterally extending fixed jaw at one end thereof, a movable jaw mounted to slide on the shank toward and from the fixed jaw, a handle pivoted to the shank near the other end, and arranged cross-wise of the shank, a rod having one end threaded, the said end having a threaded engagement with the Copies of this patent may be obtained for five cents each, by addressing the movable jaw and journaled on the shank approximately parallel with the axis thereof and movable longitudinally of the shank and engaged by the end of the handle adj acent to the rod to move the rod and the movable jaw toward the fixed jaw when the said handle is moved toward the shank, said rod having a head intermediate its ends for convenience in rotating the rod, a spring secured to the shank and engaging the head between the head and the movable jaw and acting normally to press the movable jaw away from the fixed jaw, and a roller journaled in the engaging end of the shank for contacting with the rod.

4. A wrench comprising a shank having at one end a fixed jaw and at the other end a grip or handle, a movable jaw slidable on the shank toward and from the fixed jaw, a rod having a threaded engagement with the movable jaw at one end and journaled on the shank at the other end, a handle on the opposite side of the shank from the rod and pivoted to the shank to swing toward and from the grip, said handle having means for engaging the rod to move the movable jaw toward the fixed jaw when the said handle is swung toward the grip, means for limiting the movement of the rod with respect to the shank, and a spring for pressing the movable jaw away from the fixed jaw.

LEANDER WALTER MILLSAP, JR.

Witnesses:

T. R. GoYET, M. P. GEORGE.

Commissioner of Patents.

Washington, D. 0. 

